Air freshener



FIG. 1 is a front perspective view of an air freshener showing my new design;

FIG. 2 is a back side plan view of the air freshener of FIG. 1;

FIG. 3 is a side elevation view of FIG. 1;

FIG. 4 is a bottom elevation view of FIG. 1; and,

FIG. 5 is a top elevation view of FIG. 1. 

The ornamental design for an air freshener, as shown and described. 